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A finite-element simulation that solves the electromagnetic force of a maglev train when the magnetically permeable medium is saturated is very time-consuming. The existing analytical formula for the two-dimensional magnet-rail relationship assumes that the magnetic medium operates in the linear regime of the B-H curve, which does not apply in the case of magnetic saturation. To address these shortcomings,...
While running on the track, mid-low speed maglev has to deal with the disturbance from Guideway steps and gaps, which may bring impulse to the suspension system. In order to suppress the influence of the guideway gaps to the vehicle, enhance the reliability of the system and bring passengers comfort, the article puts forward a compensation algorithm, which judges the guideway steps according to the...
Modeling is the basis work of the analysis and design of a control system, and models obtained by different modeling methods have different characteristics. In the maglev system, current is generally used as a state to model. Through analysis and comparison in this paper, compared with modeling with current state, using magnetic flux density as a state to model the maglev system, the model is much...
Aiming at analyzing the vibration and the vibration inconsistent of CMS04 Maglev in guideway step disturbance during the running in Tangshan test line, this article builds the suspension model of double point in one bogie and analyzes its open-loop instability in theory. Gap-current double loops cascade control strategy is also used to simulate and analyze the dynamic process of model passing guideway...
Automatic modulation classification (AMC) plays a key role in non-cooperative communication systems. Feature-based (FB) methods have been widely studied in particular. Most existing FB methods are deployed at a fixed SNR level, and the pre-trained classifiers may no longer be effective when the SNR level changes. The classifiers may also need to be re-trained to be suitable for the varying channel...
An intelligent ultrasonic cell disruption system with the function of frequency tracking is presented in this paper. The system is mainly composed of power supply module, frequency generator module, power amplification module and phase difference detection module. The power supply module transforms AC220V from grid into the desired power supply of the system. The frequency generator module generates...
Urban route planning is an important direction in the research of Intelligent Transportation Systems (ITS). as the development of sensor and information technology, we can recognise timely how crowded a street is. Route planning considering traffic congestion can further improve people's travel and effectively reduce the time-cost. In this paper, we use the traffic flow of a road to describe how crowded...
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